Date: Mon, 8 Mar 2010 13:50:52 +0200 From: Eugene Dzhurinsky <bofh@redwerk.com> To: freebsd-current@freebsd.org Subject: Re: A tool for remapping bad sectors in CURRENT? Message-ID: <20100308115052.GA31896@office.redwerk.com> In-Reply-To: <4B94DDC8.5080008@quip.cz> References: <20100308102918.GA5485@localhost> <4B94DDC8.5080008@quip.cz>
next in thread | previous in thread | raw e-mail | index | archive | help
[-- Attachment #1 --] On Mon, Mar 08, 2010 at 12:21:44PM +0100, Miroslav Lachman wrote: > Eugeny N Dzhurinsky wrote: > We have this problem from time to time on bunch of machines. As we are > using gmirror, the easiest way is to force re-synchronization (rewrite) > of the whole drive. The problem is when there are Pending unreadable > sectors on both drives - it ends up with read error and some file(s) are > corrupted, but there is no easy way (on FreeBSD) to find what file. > > I tried it in the past with fsdb / findblk, but it does not work as I > expect or I do not fully understand the needed calculations with slices > + partitions offsets / LBAs and right meaning of the term "block". It > seems there are several meaning in different contexts. > > It would be nice if somebody with enough FS / GEOM knowledge can write > some HowTo or shell script to do the calculations and operations to find > file containing bad sector(s) and put it in FAQ, Handbook, or Wiki. Miroslav, thank you for the suggestion - but I am not using gmirror, that HDD is the one on my laptop. However suggestions about using dd to write something into bad block to force IDE controller do it's service stuff about remapping seems did the trick. And I was able to not calculate LBA but use it as block offset, which seemed to be correct way :) -- Eugene N Dzhurinsky [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (FreeBSD) iEYEARECAAYFAkuU5JsACgkQy/i/DoZLbHyZZQCeNTq1Lxky1KI+QOrgWoPuoDLC 8N4AoJ/4Fo/wjD9cgEKumhkQvGRz0OzA =+5ID -----END PGP SIGNATURE-----
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20100308115052.GA31896>